Dipotassium di-mu-isothiocyanato-kappa4-N:S-bis[(N-salicylidene-DL- valinato-kappa3-O,N,O')cuprate(II)]
| Authors | |
|---|---|
| Year of publication | 2003 |
| Type | Article in Periodical |
| Magazine / Source | Acta Crystallographica Section C: Crystal Structure |
| MU Faculty or unit | |
| Citation | |
| Field | Inorganic chemistry |
| Keywords | Schiff base; structure |
| Description | The title compound, K2[Cu2(NCS)2(C12H13NO3)2], consists of two K+ cations and (N-salicylidene-D-valinato)copper(II) and (N-salicylidene-L-valinato)copper(II) coordination units connected through three-atom thiocyanate (-NCS) bridges into a centrosymmetric dianion. The CuII atom adopts a square-pyramidal coordination, with three donor atoms of the tridentate Schiff base and one N atom of the bridging ligand (-NCS) in the basal plane. The axial position is occupied by the thiocyanate S atom of a symmetry-related ligand at an apical distance of 2.9332 (10) Ĺ. Coulombic interactions between six-coordinated K+ ions and the heteroatoms of neighbouring dimeric anions leads to the formation of one-dimensional chains of molecules parallel to [010]. The superposition of the normals of the pyramidal base planes in a direction close to [001] indicates possible pi-pi interactions between neighbouring units. |
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